{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "grampians-2016",
 "title": "Grampians Transect 2016",
 "dates": {
  "coverage": {
   "year_start": 2016,
   "year_end": 2016
  }
 },
 "abstract": "A west to east broadband magnetotelluric transect across the Grampians in western Victoria, acquired by Adelaide University over a week in June 2016. Twenty nine soundings run 167.8 km from 141.93 to 143.62 degrees east at a median spacing of 5.9 km. Each site recorded two electric and two magnetic components at 1000 Hz on an Earth Data PR6-24 logger with a LEMI-120 coil pair and a remote magnetic reference, processed into impedance with variances over 51 to 56 periods from 0.0064 to 2183.4 seconds. Three files carry a tipper block that holds only the export's empty sentinel, so no station of this survey publishes a tipper. Every file declares a 305 degree rotation, which the reader normalises to -55 degrees, and AusMT serves each sounding in that stored frame. The header dates are repaired into ISO 8601 and the delivered bytes are kept in provenance; caveats are in README.md.",
 "subjects": [
  {
   "code": "370602",
   "scheme": "ANZSRC-FoR-2020",
   "label": "Electrical and electromagnetic methods in geophysics",
   "uri": "https://linked.data.gov.au/def/anzsrc-for/2020/370602"
  }
 ],
 "organisations": [
  {
   "name": "Adelaide University",
   "ror": "https://ror.org/028g18b61",
   "roles": [
    "custodian",
    "publisher",
    "data_collector"
   ],
   "primary_custodian": true
  }
 ],
 "rights": {
  "license": "CC-BY-4.0",
  "access": "open"
 },
 "extent": {
  "bbox": {
   "west": 141.9315,
   "south": -37.8369,
   "east": 143.6189,
   "north": -37.271
  }
 },
 "relationships": [
  {
   "identifier": "10.4225/41/5a618c3ae30ab",
   "identifier_type": "DOI",
   "relation": "IsPartOf"
  }
 ],
 "provenance": {
  "generated": "2026-09-20T05:05:11Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}